Indoors? You're not aware that the Davis sisters were standing at their opened front door as the killer fled across their front yard?
The Davis sisters
-in-law didn't know that the guy they saw killed anybody.
They also didn't even agree on basic details about what they saw, like whether the screen door was opened or closed when they saw the boy, whether they called the police before or after they saw him, whether he looked at them or not, whether they were inside or out on the porch when they saw him, when they viewed the lineup, who was the first to identify him, and what he was wearing. Neither one of them could identify the shells in evidence as the same ones they handed to the police.
Unfair and biased lineups are an unreliable way of determining what is true.